Allow note of thread edit without post

With this add-on, a moderator would be able to close, stick, move, etc. a thread without needing to post notifying readers about the change ("Moved to x forum" and the like). The thread edit would post a small message in the thread like the deletion notice (see image above). In my mind, it would also send an alert to those who are watching it. It's nothing vital to have, but I think it would be nice to use instead of needing to post about it. Thanks for reading.